Deep Zone (also known as Deep Zone Project) are a Bulgarian electro/house band formed in 2000 consisting of DJs Dian Solo, JuraTone and Rossko. They included Joanna as a founding member. She used to be in the vocal Bulgarian group Bon-Bon and was also a television presenter.
Together with DJ Balthazar, they represented their home country in the 2008 Contest in Belgrade with the song "DJ, Take Me Away", but finished in 11th place in the semi finals.
In 2011, Joanna left the band to develop a solo career. She was replaced by vocalist Nadia. In 2015, both Nadia and band member Alex Kiprov left the group.